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ryzh [129]
3 years ago
7

Let f(x)=x^2-2x-4

Mathematics
2 answers:
Otrada [13]3 years ago
5 0

Answer:

1

Step-by-step explanation:

It's 1 I  took the test

It's in the picture

mixas84 [53]3 years ago
3 0
The average rate of change is 5.
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the height y of a ball thrown by a child is given by y = -1/12x^2 + 2x + 4. how high is the ball when it is at its maximum heigh
zhuklara [117]

Answer:

The height of ball when it is at maximum height is 12  unit

Step-by-step explanation:

Given as :

A ball is thrown by child to height y

And y as a function  x is y = -\frac{1}{12}x^{2}+2x+4

So, for maximum value of height ,

\frac{\partial y}{\partial x}  = 0

Or , \frac{\partial (-\frac{1}{12}x^{2}+2x+4)}{\partial x} = 0

Or, -\frac{1}{12}(2x)+2 = 0

Or, \frac{1}{12}(2x) = 2

or,  x = 12

Hence The height of ball when it is at maximum height is 12  unit  Answer

3 0
3 years ago
100) Reflect the point in (a) the x-axis and (b) the y-axis.
klemol [59]

Answer:

Step-by-step explanation:

36. (4,1)

x-axis(4,-1)

y-axis(-4,1)

37.(-2,3)

x-axis(2,-3)

y-axis(-2,3)

38.(2,-5)

x-axis(-2,5)

y-axis(2,-5)

39.(-3.5, -2.5)

x-axis(-3.5,2.5)

y-axis(3.5,-2.5)

Please correct me I am wrong

Here is the y-axis formula (-x,y)

Here is the x-axis formula(x,-y)

4 0
3 years ago
Please help this is for my maths midterm and i have no idea how to solve
slava [35]

Step-by-step explanation:

4 0
3 years ago
A standard deck of 52 cards has an additional card—a joker—added to it, making the total number of cards in the deck 53. a singl
Tom [10]
53 cards in total....2 black kings

P(picking a black king) = 2/53 = 0.037 = 3.7%
8 0
3 years ago
Help help help help please please e
Solnce55 [7]
The answer, when rounded to the nearest tenth is 19.2

First you can get rid of the decimals by multiplying both numbers by 100, this just makes the whole problem easier. Now all that needs to be done is long division:

(In my work I didn’t realize that it said round to the nearest tenth until I had already gotten past what I needed to find)

7 0
2 years ago
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